SERVER-38975 Include UUID in high water marks from shards where the collection does not exist

1 files changed, 0 insertions, 9 deletions

diff --git a/src/mongo/db/pipeline/document_source_change_stream_transform.cpp b/src/mongo/db/pipeline/document_source_change_stream_transform.cpp
index 493b284ba75..e9435d5ced2 100644
--- a/src/mongo/db/pipeline/document_source_change_stream_transform.cpp
+++ b/src/mongo/db/pipeline/document_source_change_stream_transform.cpp
@@ -349,15 +349,6 @@ Document DocumentSourceChangeStreamTransform::applyTransformation(const Document
         invariant(!uuid.missing(), "Saw a CRUD op without a UUID");
     }
 
-    // If the collection did not exist when the change stream was opened, then the UUID will not
-    // have been obtained from the catalog. In this case, we set the UUID on the ExpressionContext
-    // after obtaining it from the first relevant oplog entry, so that the UUID can be included in
-    // high water mark tokens for change streams watching a single collection. The UUID is needed
-    // for resumability against a single collection due to collation semantics.
-    if (!pExpCtx->uuid && !uuid.missing() && pExpCtx->isSingleNamespaceAggregation()) {
-        pExpCtx->uuid = uuid.getUuid();
-    }
-
     // Note that 'documentKey' and/or 'uuid' might be missing, in which case they will not appear
     // in the output.
     auto resumeTokenData = getResumeToken(ts, uuid, documentKey);